Add allow-insecure and deny-insecure server flags (appium#1282)

Author: nacfe

src/main/java/io/appium/java_client/service/local/flags/GeneralServerFlag.java

@@ -119,7 +119,21 @@ public enum GeneralServerFlag implements ServerArgument {
  /**
  * Enables NodeJS memory dumps collection feature.
  */
- ENABLE_HEAP_DUMP("--enable-heapdump");
+ ENABLE_HEAP_DUMP("--enable-heapdump"),
+ /**
+ * Allow a list of features which are considered insecure and must be turned on
+ * explicitly by system administrators.
+ * Default: []
+ * Sample: --allow-insecure=foo,bar
+ */
+ ALLOW_INSECURE("--allow-insecure"),
+ /**
+ * Specify a list of features which will never be allowed to run, even if --relaxed-security
+ * is turned on, and even if feature names are listed with --allow-insecure.
+ * Default: []
+ * Sample: --deny-insecure=foo,bar
+ */
+ DENY_INSECURE("--deny-insecure");
 
  private final String arg;